Add assertion.

2017-09-26 15:42:23 +02:00 · 2017-09-26 15:42:23 +02:00 · 8799b7b01e
parent 60407b783b
commit 8799b7b01e
1 changed files with 1 additions and 0 deletions
--- a/source/eventcore/internal/dlist.d
+++ b/source/eventcore/internal/dlist.d
@ -59,6 +59,7 @@ struct StackDList(T) {

 	void insertAfter(T* item, T* after)
 	{
+		assert(!item.prev && !item.next);
 		if (!after) insertBack(item);
 		else {
 			item.prev = after;